Zobrazeno 1 - 10
of 509
pro vyhledávání: '"Tarucha, Seigo"'
Autor:
Rojas-Arias, Juan S., Kojima, Yohei, Takeda, Kenta, Stano, Peter, Nakajima, Takashi, Yoneda, Jun, Noiri, Akito, Kobayashi, Takashi, Loss, Daniel, Tarucha, Seigo
We measure and analyze noise-induced energy-fluctuations of spin qubits defined in quantum dots made of isotopically natural silicon. Combining Ramsey, time-correlation of single-shot measurements, and CPMG experiments, we cover the qubit noise power
Externí odkaz:
http://arxiv.org/abs/2408.13707
Autor:
Takeda, Kenta, Noiri, Akito, Nakajima, Takashi, Camenzind, Leon C., Kobayashi, Takashi, Sammak, Amir, Scappucci, Giordano, Tarucha, Seigo
Publikováno v:
npj Quantum Inf 10, 22 (2024)
Silicon-based spin qubits offer a potential pathway toward realizing a scalable quantum computer owing to their compatibility with semiconductor manufacturing technologies. Recent experiments in this system have demonstrated crucial technologies, inc
Externí odkaz:
http://arxiv.org/abs/2309.00225
Autor:
Wu, Yi-Hsien, Camenzind, Leon C., Noiri, Akito, Takeda, Kenta, Nakajima, Takashi, Kobayashi, Takashi, Chang, Chien-Yuan, Sammak, Amir, Scappucci, Giordano, Goan, Hsi-Sheng, Tarucha, Seigo
Because of their long coherence time and compatibility with industrial foundry processes, electron spin qubits are a promising platform for scalable quantum processors. A full-fledged quantum computer will need quantum error correction, which require
Externí odkaz:
http://arxiv.org/abs/2307.09031
Publikováno v:
Phys. Rev. B 108, 155306 (2023)
We analyze the polarization of nuclear spins in a quantum dot induced by a single-electron spin that is electrically driven to perform coherent Rabi oscillations. We derive the associated nuclear-spin polarization rate and analyze its dependence on t
Externí odkaz:
http://arxiv.org/abs/2306.11253
Autor:
Matsuo, Sadashige, Imoto, Takaya, Yokoyama, Tomohiro, Sato, Yosuke, Lindemann, Tyler, Gronin, Sergei, Gardner, Geoffrey C., Manfra, Michael J., Tarucha, Seigo
Superconducting devices with broken time-reversal and spatial-inversion symmetries can exhibit novel superconducting phenomena. The observation of superconducting diode effects, which is applicable for dissipationless rectification, provides informat
Externí odkaz:
http://arxiv.org/abs/2305.07923
Autor:
Matsuo, Sadashige, Imoto, Takaya, Yokoyama, Tomohiro, Sato, Yosuke, Lindemann, Tyler, Gronin, Sergei, Gardner, Geoffrey C., Manfra, Michael J., Tarucha, Seigo
A Josephson junction (JJ) is a key device in the development of superconducting circuits, wherein a supercurrent in the JJ is controlled by the phase difference between the two superconducting electrodes. Recently, it has been shown that the JJ curre
Externí odkaz:
http://arxiv.org/abs/2305.06596
Autor:
Matsuo, Sadashige, Imoto, Takaya, Yokoyama, Tomohiro, Sato, Yosuke, Lindemann, Tyler, Gronin, Sergei, Gardner, Geoffrey C., Nakosai, Sho, Tanaka, Yukio, Manfra, Michael J., Tarucha, Seigo
The Josephson junction (JJ) is an essential element of superconducting (SC) devices for both fundamental and applied physics. The short-range coherent coupling of two adjacent JJs forms the Andreev molecule states (AMSs), which will provide a new ing
Externí odkaz:
http://arxiv.org/abs/2303.10540
We have theoretically studied phonon-mediated spin-flip processes of electrons in a GaAs double quantum dot (DQD) holding two spins, under a phonon temperature gradient over the DQD. Transition rates of inter-dot phonon-assisted tunnel processes and
Externí odkaz:
http://arxiv.org/abs/2303.05700
Autor:
Rojas-Arias, Juan S., Noiri, Akito, Stano, Peter, Nakajima, Takashi, Yoneda, Jun, Takeda, Kenta, Kobayashi, Takashi, Sammak, Amir, Scappucci, Giordano, Loss, Daniel, Tarucha, Seigo
Publikováno v:
Phys. Rev. Applied 20, 054024 (2023)
We detect correlations in qubit-energy fluctuations of non-neighboring qubits defined in isotopically purified Si/SiGe quantum dots. At low frequencies (where the noise is strongest), the correlation coefficient reaches 10% for a next-nearest-neighbo
Externí odkaz:
http://arxiv.org/abs/2302.11717
Autor:
Muto, Yui, Nakaso, Takumi, Shinozaki, Motoya, Aizawa, Takumi, Kitada, Takahito, Nakajima, Takashi, Delbecq, Matthieu R., Yoneda, Jun, Takeda, Kenta, Noiri, Akito, Ludwig, Arne, Wieck, Andreas D., Tarucha, Seigo, Kanemura, Atsunori, Shiga, Motoki, Otsuka, Tomohiro
Publikováno v:
APL Machine Learning 2, 026110 (2024)
Charge state recognition in quantum dot devices is important in the preparation of quantum bits for quantum information processing. Toward auto-tuning of larger-scale quantum devices, automatic charge state recognition by machine learning has been de
Externí odkaz:
http://arxiv.org/abs/2210.15070